Add build instructions to demo README

nav2_demo/README.md

@@ -1,3 +1,12 @@
+# This folder contains the necessary files for running Nav2 on the Mars Rover demo
+
+## First build this container using the build script
+```
+build.sh
+```
+
+There will now be a docker image called "osrf_space_nav2_demo:latest"
+
 # Run the Mars Rover demo with Nav2 and SLAM toolbox
 
 ## Terminal 1 - launch the mars_rover demo 
@@ -6,19 +15,19 @@ Follow instructions on space-ros/docker/space-robots/README.md
 ## Terminal 2 - launch Nav2
 Start the space_nav2 container and launch the navigation2 nodes
 ```
-space-ros/docker/navigation2/run.sh
+run.sh
 ros2 launch nav2_bringup navigation_launch.py use_sim_time:=True
 ```
 ## Terminal 3 - launch localization with map
 ```
-docker exec -it osrf_space_nav2 bash
+docker exec -it osrf_space_nav2_demo bash
 source install/setup.bash
 ros2 launch nav2_bringup localization_launch.py use_sim_time:=True map:=mars_map.yaml 
 ```
 ## Terminal 4 - launch Rviz
 Exec into the same space_nav2 container and launch Rviz2
 ```
-docker exec -it -e DISPLAY=:0 osrf_space_nav2 bash
+docker exec -it -e DISPLAY=:0 osrf_space_nav2_demo bash
 source /opt/ros/humble/setup.bash
 source install/setup.bash
 ros2 launch nav2_bringup rviz_launch.py